Green Bay is served by Austin Straubel International Airport (GRB) with daily connections to Chicago, Minneapolis, Detroit, and other hub airports. Milwaukee is about 2 hours south on I-43 and has more flight options. Driving is the standard way to reach Green Bay from most of Wisconsin; Madison is 2.5 hours to the southwest, Milwaukee 2 hours to the south. Greyhound and Lamers Bus Lines serve Green Bay with connections to Milwaukee and beyond; there is no passenger rail service.